Metering dispenser

Abstract

The invention relates to a dispenser for discharging at least one component. Said dispenser comprises a base body ( 100 ) and an advancing element ( 300 ) that can be slid. The advancing element ( 300 ) acts upon a container having the component so that the component is discharged from the container by means of an advancement of the advancing element ( 300 ). The advancing element ( 300 ) comprises teeth ( 321 ) in the advancing direction. An actuating lever ( 400 ) can be swiveled relative to the base body ( 100 ) between an initial position and an activated position. The actuating lever comprises one or more teeth ( 421 ), which are engaged with the teeth ( 321 ) of the advancing element when the advancing element ( 300 ) is advanced. In order to enable a simple resetting motion of the actuating lever ( 400 ) from the activated position back to the initial position, the actuating lever ( 400 ) can be moved as a whole to a decoupled position relative to the base body ( 100 ), in which decoupled position the teeth ( 421 ) of the actuating lever ( 400 ) disengage from the teeth ( 321 ) of the advancing element ( 300 ). A very simple design of the dispenser having few individual parts is thereby enabled.

The invention claimed is: 
     
       1. A dispensing device for dispensing at least one component, comprising:
 a base body; 
 an advancing element, which is guided displaceably relative to the base body and is designed to act on a container containing the component such that the component is dispensed from the container by means of an advance of the advancing element in a distal direction of advance, wherein the advancing element has a toothing along the direction of advance; 
 an actuating lever having one or more teeth for engagement with the toothing of the advancing element, the actuating lever and the teeth together forming a rigid, dimensionally stable unit, 
 the actuating lever being pivotable relative to the base body from an initial position into an activated position about a pivot axis to advance the advancing element in the distal direction, and the pivot axis being displaceable relative to the base body toward the toothing and away from the toothing for displacing the actuating lever as a whole between an engagement position, in which the teeth of the actuating lever are in engagement with the toothing of the advancing element, and a decoupled position, in which the teeth of the actuating lever are disengaged from the toothing of the advancing element, so as to disengage the teeth from the toothing when the actuating lever returns from the activated position to the initial position. 
 
     
     
       2. The dispensing device as claimed in  claim 1 , wherein the actuating lever, with respect to the pivoting movement, is spring-loaded in the direction of the initial position. 
     
     
       3. The dispensing device as claimed in  claim 1 , wherein the pivot axis is spring-loaded in the direction of the engagement position. 
     
     
       4. The dispensing device as claimed in  claim 1 , wherein the dispensing device comprises a spring, which generates a first force component in order to load the actuating lever with respect to the pivoting movement in the direction of the initial position, and which generates a second force component in order to load the pivot axis in the direction of the engagement position. 
     
     
       5. The dispensing device as claimed in  claim 1 , wherein the dispensing device has a return stop mechanism, which impedes a movement of the advancing element-counter to the direction of advance when the actuating lever is moved back from the activated position to the initial position. 
     
     
       6. The dispensing device as claimed in  claim 1 , wherein the toothing of the advancing element is composed of asymmetrically configured teeth, wherein the teeth have a front flank, which faces in the direction of advance, and a rear flank, which faces in a direction counter to the direction of advance, wherein the front flank assumes a shallower angle to the direction of advance than the rear flank. 
     
     
       7. The dispensing device as claimed in  claim 6 , wherein the rear flank assumes an angle of more than 90° to the direction of advance. 
     
     
       8. The dispensing device as claimed in  claim 1 , wherein the base body has a handle shaped like a pistol grip and designed to be grasped in one hand by a user, and wherein the actuating lever has a grip area designed to be pulled by one or more fingers of this hand in the direction of the handle, in order to pivot the actuating lever from the initial position to the activated position. 
     
     
       9. The dispensing device as claimed in  claim 8 , wherein the teeth of the actuating lever are arranged, with respect to the pivot axis, on a top face of the actuating lever lying opposite the grip area, and the toothing of the advancing element is arranged on an underside of the advancing element facing toward the handle. 
     
     
       10. The dispensing device as claimed in  claim 1 , wherein a shaft element of the actuating lever is guided displaceably in at least one oblong hole of the base body, in order to move the actuating lever as a whole between the engagement position and the decoupled position. 
     
     
       11. The dispensing device as claimed in  claim 1 , which comprises at least one cylindrical syringe body for receiving the at least one component, and at least one syringe plunger movable in the syringe body, and wherein the syringe plunger can be pushed forward in the syringe body by the advancing element in order to dispense the component. 
     
     
       12. The dispensing device as claimed in  claim 11 , wherein the syringe body is designed integrally with the base body. 
     
     
       13. The dispensing device as claimed in  claim 11 , with at least a first cylindrical syringe body, a first syringe plunger movable therein, a second cylindrical syringe body arranged parallel to the first syringe body, and a second syringe plunger movable in the second cylindrical syringe body, in order to dispense a respective component from each of the syringe bodies. 
     
     
       14. The dispensing device as claimed in  claim 13 , wherein the advancing element comprises:
 a first plunger rod, which acts with a distal end on the first syringe plunger; 
 a second plunger rod, which acts with a distal end on the second syringe plunger; 
 a connection area between the plunger rods, which connection area is formed in a proximal end area of the plunger rods in order to connect the plunger rods; 
 wherein the toothing of the advancing element is formed both on the first and also on the second plunger rod. 
 
     
     
       15. The dispensing device as claimed in  claim 1 , additionally having a guide element, which is designed separately from the base body and can be secured on the base body, and in which the advancing element is guided displaceably.